I have a wonder mill, and I love it. It was worth every penny. It grinds beautiful, fine flour. It even grinds corn! Fresh cornmeal is such a luxury! No bitter taste. The best meatless Friday corn pone you will ever taste is with fresh ground cornmeal!! And the same for wheat flour, store bought wheat flour gets bitter so quickly. I hated anything wheat forever because I associated a bitter taste with it. Not anymore since I grind my own flour. I had a kitchen aid grinder attachment, and it made a very course flour, not at all nice. Good for cracked hot cereal mixes. But it was all I had for years, and I made the best of it. This fall, I bought some local grown Einkorn wheat, and I will get spelt as well. Again, for so many reasons, it is worth the $2 a pound. I believe in spending money on good quality, wholesome, whole foods. We are going on 9 children, and I won't skimp on quality, whole ingredients, even though we are not well off.
I will order my spelt by the 50# bag from our local Co-op or get Great River Mills from Amazon. I use food safe buckets from Menards and gamma lids to store it. Hard to say how much I spend...